How to make a maths exam in C#

int correct = 0;
int incorrect = 0;
q1 = Console.ReadLine();
Console.WriteLine("What is 92x28?");
if q1 = "2576"
{
    print("Correct!");
    correct + 1;
    }
if else
{
    print("Incorrect...");
    incorrect + 1;
    }
q2 = Console.ReadLine();
Console.WriteLine("What is 387+293?");
if q2 = "680"
{
    print("Correct!");
    correct + 1;
    }
if else
{
    print("Incorrect...");
    incorrect + 1;
    }
q3 = Console.ReadLine();
Console.WriteLine("What is 300/10?");
if q3 = "30"
{
    print("Correct!");
    correct + 1;
    }
if else
{
    print("Incorrect...");
    incorrect + 1;
    }
q4 = Console.ReadLine();
Console.WriteLine("What is 239-129?");
if q1 = "164"
{
    print("Correct!");
    correct + 1;
    }
if else
{
    print("Incorrect...");
    incorrect + 1;
    }
q5 = Console.ReadLine();
Console.WriteLine("What is 83x19?");
if q5 = "1577"
{
    print("Correct!");
    correct + 1;
    }
if else
{
    print("Incorrect...");
    incorrect + 1;
    }
if (correct > incorrect)
    Console.WriteLine("You passed!");
if else
    Console.WriteLine("You failed...");
//for the python edition of this script... see here: https://pastebin.com/7vbjTCXC